Spiegel, Murray R. Applied differential equations / Murray R. Spiegel. - 3d ed. - Englewood Cliffs, N.J. : Prentice-Hall, c1981. - xvi, 654 p. : ill. : 24 cm. Includes index. ISBN: 0130400971 Subjects--Topical Terms: Differential equations. Dewey Class. No.: 515.35